"If your candidate wins and he governs the way he has campaigned, my country, this country, will have constitutional crises [like] never before"

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One of the standout speeches at the Democratic National Convention came not from the slew of politicians or celebrities but from the parents of a Muslim-American war hero who shared a stirring reprimand for GOP candidate Donald Trump. But that was only part of their message.

Khizr Khan appeared on MSNBC's "Last Call With Lawrence O'Donnell" on Friday with his wife Ghazala Khan and said there were two other individuals he wanted to address: Senate Majority Leader Mitch McConnell and House Speaker Paul Ryan.